So after many good runs my Castle Creations ESC stopped working essentially. I don't know what happened. When I went to go use it again, I connected my battery and nothing. Just the usual spark when I connect the battery. I thought it could have been from a solder joint gone bad or coming loose so I even resoldered that connection and still nothing. Could have run and used the esc with a poor solder connection on one wire over time killed my esc? Is there any other way to test the esc to see if there is any life? Its about 4 years old and been used gently. I'm just trying to figure out what could have caused it to fail on me!